Controlling mechanism for engines.



G. ENRICO.

GONTROLLING MEGHANISM FOR ENGINES.

APPLICATION FILED DB0. 1o, 190e. BENEWBD APR. 15, 190B.

Patented Nov 3, 1908 Go2/@waar /3 of i4 EEE ` @mom/Hoz WW1/Waeco 33 A; www MME.

www www p s'rn'rns PATENT QFFCE# -l GIOVANNI ENRICO, OFYTURIN, ITALY, ASSIGNOR, BY MESNE ASSIGNMENTS, 'IO

AUTOMOBILE COMPANY, A lCORPORATION OF NEW YORK.

riA'r CONTROLLING MIECHANISM FR NGIES.

Specification of Letters Patent.

' Patented Nov. 3, 1908.

Application led Decemberv 10', 1906, Serial No. 347,041. Renewed April 15, 1908. "Serial No. l127,210.

,i5 Italy, have invented certain new and useful Improvements in Controlling Mechanism for Internal-Combustion Engines, of which the following is a full, clear, and exact specification.

This invention relates to controlling mechanism for internal combustion engines, and has especial reference tothe provision of controlling mechanism which will revent the driver from regulating the engine in such manner as to exceed a predetermined speed. In engines of this type, operating under conditions, varying both as to load and speed, a speed governor acting upon the engine throttle or the spark timing devices `is commonly employed to prevent excessive speeds, and otherconnections, controlled directly by the driver are also rovided, so that he can vary the speed at will. As commonly arranged,

the connections have been such as to permit the driver to practically nullify the control i exercised by the governor, and to attain ex cessive speeds, with the consequent result of overheating and dama ing the engine, and unnecessarily wasting t iefuel. y

This invention has for its object to provide mechanism such that the driver will be prevented from increasing the speed above the limit determined by the governor, no matter how he may manipulate the manual speed controlling devices.

As exemplified herein, the invention is applied to the throttle of an internal combustion engine, but the same principle of operation may be used-'to control the speed in other ways, as will be hereinafter pointed out.

The invention also has for its object to simplify and improve the mechanism, and arrangements of parts, as Willbe more fully pointed out in connection with the accompanying drawings, wherein Figure 1 is an elevation of parts of a motor vehicle embodying the invention; Fig. 2 is a planview, and Fig. 3 an end view.

1, 1, represents the frame of a vehicle on which the engine 2is mounted. The latter comprises a plurality of cylinders 3, having inlet chambers 4, supplied from a pipe 5, carbureter 6, inletvalve-stems 7, exhaust chambers 8, exhaust pipe 9, main shaft 10, all of Well knownconstruction.: 12 is the steering move the throttle valve.

V38 represents a centrifuga post, having hand wheel 13, and connected through suitable connections, to the steering wheels, not shown. Located in pipe 5 is throttle valve 16, which is operatedv manually to control the engine speed by varying the quantity of mixture supplied to the engine., The valve 16 is on a stem 17, whichv is. connected by a link 18with a lever 19, carried by a rock-shaft 20. 21, 22, are the arms of a bell crank lever loosely mounted on shaftl 20, but connected therewith by a. spi-ral. spring 23, fixed at one end to the shaft, and at the other end to one arm of the lever,

22.y Any movement of the lever, will thergdj wf 'Y 1 fore, through spring 23, rock the shaft and,

nected by link 24 with a sleeve 2,5 carriedon the steering post 12, and free to inove longitudinally thereon, but held against rotation.v 28 is a pin projecting throu h slots 29 in post 12 and engaging an interna groove in sleeve -12, and pin 28 isv carried by a reciprocatingl rod 30 within tube 12. The rod 30'is reciprrocatedby means of a Worm 3.1, which turned by a crank 49, having bearings in the steering post 12, and capable of being set in any position,- by a rack 32. Furthermore itis sometimes-desirable to open the throttle quickly to secure temporarily increased power, so that a foot lever 33, pivoted at 34,

and connected by a link 35 to arm 22-is pro# vided, for opening the throttle independently of crank 49 and Without disturbingtitsadjustment. f

With the arrangements thus far described including of course the usual spark regulating devices, the s eed can be varied withln .wide limits, and requently the parts are so set by an ignorant or careless driver that the engine becomes overheated and damaged. To prevent this, a speed governor is provided, which acts to prevent `further increase of speed, as to close the throttle, when a predetermined speed is reached or to retard the spark, or both, as is well understpod, 4but with the arrangements heretofore y suggested, it has beenpossible for the driver. to

nullify the control exercised by the governor' and open the throttle in o position thereto..

overnor carried within a gear 39, mounted on a shaft 4() and driveny by a gear 41 on main sheit 10. The governor comprises pivoted. weighted. bell-crank levers 43 controlled byspmngs and lconnected with a .reciprocatingrqd 44,

'Ihe arm 21 is con-1- `tend -to coilu which actuates the throttle to partially close it if set manually for an excessive speed, through a lever 45 carried by the shaft 2() and adjustable thereon-,Whenever the speed increases beyond the desired amount.

,Thd operation of the parts may be exv'plained as follows: When the engine is at rest, the rod 44 is at its extreme right, of movement, and the driver; can open the 'throttle `as wide as hedesires by .turning lever 49,0r by Vdepressing lever 33, which spring 23 and throw the throttle to the'A eft to open position, at the same time throwing lever 45 towards the l end of rod 44. As the en ine ac uires speed,

. theyrod 44 is moved to t e lefty the governo'i and after striking lever '45, auto'- matically closes the throttle at the same time 'coilingup spring 23 Without moving' sleeve 25 or foot lever 33. If either or both of these latter parts are insuch position that the throttle isl opened, the rod 44 turns shaft 2() through lever 45 sooner than it wouldif' the throttle were already artially closed by river attempts tor the driver. If now the open the throttle with the rod 44 in such position asfto partially close it, the lonly effect is to wind u the spring 23, the throttle itself beinguna ected. Should the speed.

'can operate the throttle as vhe desires as long as lever does not strike rod 44, but as soon a's these .partscontact' any further manipui l Vmerely winds up springv23.

lation of the manual throttle connections .-48 is a governor similar to governor 38, and may be connected tothe commutator ors'pa'rlr timing devices to'vary the timing of the spark as the speed varies.vv

-By I interposing a movable abutment,

varying 1n position according to the speed,

in "combination with al flexible actuating connection, the inventioncan be appliedv to various other controlling mechanisms than -that herein described, without departing from the 'scope thereof, and the invention is' not to be restricted tothe precise construction herein described.

Having thus described my invention', I de` I.

l, clare that what I claiml as new and desire to secure by Letters Patent, is,---v

1L 'The combination with a rotating shaft and manual means including a resilient connection for controlling the speed thereof, of means r` coperating with said resilient connection for rendering said manual means ineffectiveto increase the speed above a redetermined limit, substantially as descri ed.

2. The combination with al rotating shaft and manual means including a resilient connection for controlling the-.speed thereof, of a movable abutmentv adapted to ybe opposed to said resilient connection when a predetermined speed is reached to thereby render further operation of said manual'contro'lling devices ineffective. forv increasing the speed,

lsubstantially as described.

3, The combination with a rotating shaft andv :manual means including a 'resilient con.

nection for c'ontrollin the speed thereof, of a movableabutment a apted to be opposed to said resilient connection when a predetermined speed is reached to thereby render further operation of said manual controlling devices ineffective for 'increasin the speed, but not preventing .operation of t e manual controlling devicesto decrease the speed, subv stantially as described.

.4. The combination'with a rotating shaft 'and manual means for controlling the speedy thereofl including an actuating shaft land yieldingl connections, of centrifugallyA controlled means for limiting the movement of said actuating shaft when a predetermined speed isi-reached,substantially as described.

5. The combination with' an engine and throttleactuating connections, of a centrifu- 'gal governor operated by the engine shaft and connected to prevent further opening of the throttle when apredetermined speed is reached, substantially as described.

6. The combination with an engine, and throttle actuating connections including 'a torsion member', of a centrifugal governor.

operated by the' engine shaft and acting to positively limit actuation ofthe throttle in` one direction when-a predetermined speed is reached, substantially as described. l

7. The combination-with an engine, and throttle actuatingconnections including a vtorsion member connected to`an actuating shaft, of a centrifugal governor operated by limit the movement of said actuatin shaft in one directionwlien a predetermine speed is reached, substantially-'as describedf:

8.' The combination with .an engine, of manual controllingvconnections including a -the engine shaft and acting to positively yielding member normally permitting direct speed control of the en ine, and centrifugally controlled means w ereby, at a predetermined speed, said yielding member revents manual actuation ofsaid control ing y v devices to secure increased speed, t1ally as described.

9.' The combination with an eX lesion ensubstangine having a throttle, andhan actuating connections. therefor including a spring, of a governor, and a rod actuated 'thereby to form a stop and prevent further o ening of the thrdttle when a predetermine speed is reached,,substantially as described.

1'0. The combination with an explosion enh gine having a throttle, of throttle actuating `connections 'including a spring, and-'a .cen-

tritugally controlled abutment for preventing opening ,of the throttle through the spring when' a predetermined speed is reached, substantially as described.

11. The combination of an engine controlling device, an actuating shaft, a torsion spring connected at one end with said shaft, and manual actuating connections connected with the lother end of the spring, substantiall'y as' described.

12. The combination ,with a rotatable steering post, of a reciprocating sleeve thereon, connections for operating the sleeve, a lever connected with the sleeve in all positions, and engine controlling means connected byan interposed torsion springwith said lever,` substantially as described. y

13. The combination with an engine and speed regulating means therefor, and a steering mechanism, of a worm mounted thereon, a rodada'ted to be reciprocated by said .'worm,.a sceve mounted on said steering mechanism and connected with said rod, a

'L y.rock shaftfor actuating the engine controlling .mechanism, a lever mounted o'n said shaft-and connected with said sleeve at all positions, and a spring connecting said lever with said shaft, substantially as described;

14. The combination with an engine, a

regulator, and an emergency speed accelerating device, of a yieldi-ng connection between said device and the regulator, and means whereby said connection yields to prevent increase f speed beyond a redetermined limit, wheny said limit is reac ed, sub-,v

-' stantially as described.

, 15. The combination with an en ne, and a governor ladapted to determine t e speed" thereof, of a speed regulating device actuated by said governor, manual means for controlling sai regulator up to said determined speed, means for 'setting said manual means in.a determined position, and means Whereby, said manual means is prevented from increasing the speed beyond that determined by the governor andin case of a drop in speed below the maximum automatically actuates the speed regulator to increase the speed, substantially as described.

16. The combination with an engine, and

a governor adapted to determine the speed thereof, of a speed regulating device controlled by said governor, manual means for controlling said regulator up to said determined speed, a movable abutment varying in position according to the speed of the govof a movabledevice adapte ernor, and means whereby said abutment ulator onlyr when a determined speed is reached to prevent further operation thereof such as tends'to increase the s eed above the determined speed, substantia y as described.

19. The combination with an engine having a governor, of a movable sto operated by said governor, manual means or re ulating said engine, and meanswhereby sai stop at a predetermined position prevents further actuation ofA said regulator in one direction, substantially as described.

20. The combination with an engine having a governor, of a movable sto operated thereby, manual means for regu ating said engine including a flexible connection, means whereby said stop at a predetermined position prevents further actuation of said regulator in one direction, and means whereby "l'urther actuation of said manual means is stored up in said flexible connection and becomes eiiective upon a movement of said stop responsive to a variation in the engine speed, substantially as described.

" 21. The combination with an engine and a manual regulator therefor, of a movable stop varying in position according to the engine speed, vand means whereby at a determined speed said stop renders said manual means inoperative in one direction until a variation in speed occurs, substantially as described.

22. The combinationy with a rock shaft l having connection with an en 'ne regulator, to limit the movement of said shaft, and means for manually actuating said shaft in one direction at all times and in the other direction only when such movement is not limited by said movable device, substantially as described.

23. .The combination with an engine, of controllin means, manual actuating connections, an a governor independent of said controlling means but ada ted, at a determined limit, to'prevent furt ier movement of said controlling means in one directionwithout preventing actuation of said connections, substantially as` described.

24..v The combination with an engine, of controlling means, manual means for actuat-t ist .4 Y v y l' 903,133

ing saidineans to re latev the-engine, and lling device, of separate manual devices for means whereby, at a etermined limitactu y actuating said controlling device, an oscilation of said connections is rendered inelfectl latory. part-to which .both of said devices are 15 ive to move said controlling means in one connected, and spring actuating connections 5 direction, substantially as described. between said oscillatory part and said con- 25.' The combination with as eed control trolling device7 substantially as described. ling device, of separate manna devices for In testimony whereof I aHix my signature, actuating `said lcontrolling device, and acin presence of tWo Witnesses. l tuating lconnections comprising -a torsion A GIOVANNI ENRICO.

'IVitnessesr .l l I O. F. HAUssMAN,'

1 JOSEPH FORMAS.

lo spring between said manual devices and said controlling device, substantially as described.

26. The combination with a speed control- 

